Top new questions this week:
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I remember that Doom had a free trial version where you can play the first episode but the other two you have to buy. There are other games that did that as well. If I understand it, in order to do ...
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In the Swedish-language song "Nostalgi" by Markoolio from 2003, some of the lyrics go:
My first computer had 64 kB
you surfed on the water, and that's that
The computer games were loaded ...
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The closest I was able to find on StackOverflow is What are .S files?, in which no answerer addresses why we use .s for assembly. (And .S for preprocessor/macro assembly; and gcc -S to produce ...
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The Neo Geo has incredibly powerful sprite based hardware, but can it do raster effects?
Raster effects are where changes to the graphics hardware registers are made mid frame, usually timed to be in ...
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I don't understand why western design centre made the 65816 a 16bit upgrade to the 6502 but commodore semiconductor group/MOS technology didn't make their own variant & why neither company made ...
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One of my favourite computer history books is Stan Augarten's "Bit by Bit", which has an author-approved scanned copy at http://ds-wordpress.haverford.edu/bitbybit/
In it, the author makes ...
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I'm trying to get a feel for what it looked like when you designed a computer to have a lot of memory chips stuffed into it. To that end, I found this: https://commons.wikimedia.org/wiki/File:...
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Greatest hits from previous weeks:
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There are a lot of retro-computers with BASIC as an integral part of the operating system. The IBM 5100 was one of the first computers with a separate memory space for BASIC, followed by the Commodore ...
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Considering all those early home computers, the ZX Spectrum, the Galaksija, the VIC-20, the Apple I/II/III, and all of those, they all have some 8-bit CPU which does integer arithmetic and no floating ...
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It's clear where many of the design decisions of IEEE 754 floating point come from. For example, the binary format maximizes efficiency on binary hardware. And 32 and 64 bits for single and double ...
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Is it really the case that Mozilla Firefox is a modern day version of Netscape Navigator?
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Reading the NESdev wiki page on CPU unofficial opcodes, I see a few games use an undocumented 2-byte NOP instuction in production: Puzznic, F-117A Stealth Fighter, and Infiltrator use $89 #i. Beauty ...
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My father is a retired programmer. When I was in high school in the late 1970s, he purchased a TRS-80 model 1 (on which I learned to program in BASIC). At some point in the early 1980s it, together ...
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When I began high school in 1987 all the computers in the lab were Apple IIe desktop computers. A question has haunted me since then:
if you inserted a floppy disk "upside down" the Apple IIe would ...
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Can you answer these questions?
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I have under my disposal some Ford EECV bin files and my goal for the next few weeks is to retrieve the functions and tables and plot them out before going onto DIY hardware . .
Does anyone know which ...
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Computer pioneer Grace Hopper often recounted the story of her team finding the first physical computer bug:
While she was working on a Mark II Computer at Harvard University in 1947, her associates ...
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In the MIPS architecture, blez/bgtz and bltz/bgez are encoded differently:
blez/bgtz are encoded as: [BLEZ/BGTZ: 6 bits] [RS: 5 bits] [0: 5 bits] [OFFSET: 16 bits]
bltz/bgez are encoded as: [REGIMM: 6 ...
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